------- Comment #4 from cnstar9988 at gmail dot com 2007-07-25 09:13 ------- I download GCC from ftp.gnu.org, 4.2.1 release.
gcc -O3 -Wall test.c can gernerate warning on gcc-4.2.1 on x86 but no warning on gcc-4.2.1/x64. even -m32 or -m64. I only think the behavior on both platform is the same, because of same release of GCC. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32887